Honeywell thermostats can be either manual or digital (programmable), and the way to work them depends on the type. For a manual Honeywell thermostat:

• You select the desired temperature by turning the dial, moving a lever, or pressing up/down buttons.
• Set the fan to "Auto" (runs with heating or cooling) or "On" (runs continuously).
• Set the mode to "Heat," "Cool," or "Off" depending on the season and preferences.

For a digital (programmable) Honeywell thermostat:

• First, set the time and day on the thermostat.
• Set the system mode (heat, cool, off) and fan mode.
• Use the programming feature (accessed via "Set," "Prog," or "Menu" button) to create heating and cooling schedules for different times and days.
• The thermostat will automatically adjust the temperature according to the programmed schedule.
• You can manually override programmed settings when needed.

For specific models like Honeywell T4 Pro, T3R, or RTH2300, the controls include buttons for temperature up/down, mode selection, fan control, programming menu, and sometimes touchscreen interfaces. The key steps with a Honeywell thermostat are:

1. Set the current time and day.
2. Choose the desired system mode (heat, cool, auto, or off).
3. Adjust the fan setting.
4. Set your target temperature.
5. For programmable models, set your schedule for different times.
6. Use manual overrides as needed.

For detailed instructions, it is best to consult the user manual specific to the model or contact Honeywell Customer Support.